FPS and Hz are the two most important numbers in PC gaming — and they are constantly confused. FPS (frames per second) is how many frames your graphics card produces every second. Hz (Hertz) is how many times your monitor refreshes every second. They are independent numbers, but they interact in important ways that determine whether your system feels smooth, responsive, or frustrating.
The simplest way to think about it: FPS is the supply, Hz is the demand. Your GPU produces frames (supply) as fast as it can; your monitor consumes them (demand) at a fixed rate. If supply matches demand — 144 FPS on a 144 Hz monitor — everything is smooth. If supply exceeds demand — 200 FPS on a 60 Hz monitor — you get tearing unless you enable VSync, in which case you get input lag. If supply is less than demand — 60 FPS on a 144 Hz monitor — the monitor shows the same frame for multiple refreshes, which looks smooth but does not use the full refresh rate.
The full FPS vs Hz comparison
| Aspect | FPS (frames per second) | Hz (refresh rate) |
|---|---|---|
| What it measures | Frames produced by GPU per second | Refreshes performed by monitor per second |
| Property of | Graphics card + CPU + game settings | Monitor panel + scaler + cable |
| Typical range | 30 to 500+ FPS | 60 to 540 Hz |
| Upgrade cost | $300-$2000 for a faster GPU | $200-$1500 for a higher-Hz monitor |
| Bottleneck symptoms | Stutter, frame drops, low GPU usage | Tearing, judder, low monitor refresh |
| Affected by game | Yes — heavier games produce fewer frames | No — monitor refreshes at the same rate regardless of game |
| Affected by resolution | Yes — higher resolution = lower FPS | Sometimes — high-res needs more bandwidth |
| Affected by settings | Yes — lower settings = higher FPS | No — refresh rate is independent of settings |
What happens when FPS and Hz don't match
The interaction between FPS and Hz is where most gaming visual issues come from. Here is the full matrix:
| Setup | Tearing | Stutter | Input lag | Smoothness |
|---|---|---|---|---|
| FPS = Hz (e.g. 144/144) | None | None | Low | Perfect |
| FPS > Hz, VSync off (e.g. 200/60) | Yes | None | Lowest | Smooth but torn |
| FPS > Hz, VSync on (e.g. 200/60) | None | None | Higher | Smooth |
| FPS > Hz, VRR on (e.g. 200/144) | None | None | Low | Perfect |
| FPS < Hz (e.g. 60/144) | None | Slight judder | Medium | Smooth but not using full Hz |
| FPS variable, VRR off (e.g. 80-150/144) | Yes | Yes — frame pacing issues | Variable | Stuttery |
| FPS variable, VRR on (e.g. 80-150/144) | None | None | Low | Smooth at any FPS |
Should you upgrade your GPU or your monitor?
This is one of the most common upgrade questions, and the answer depends entirely on your current setup. Here is the decision tree:
- If your monitor is 60 Hz and your GPU is producing 100+ FPS in your favourite games: Upgrade the monitor to 144 Hz+. You are wasting your GPU's potential on a 60 Hz screen.
- If your monitor is 144 Hz but your GPU is producing 60 FPS in modern games:Upgrade the GPU. Your monitor is capable of more, but your GPU cannot feed it.
- If both are 60 Hz / 60 FPS: Upgrade the monitor first. Going from 60 Hz to 144 Hz is a bigger perceived improvement than going from 60 FPS to 144 FPS on the same monitor.
- If your monitor is 144 Hz and your GPU is producing 144 FPS but you want more: This is where diminishing returns kick in. A 240 Hz monitor or a faster GPU will give marginal improvements. Consider spending the money elsewhere (better audio, more storage, a vacation).
- If you play competitive esports at a high level: Both matter equally. Pros need 240+ Hz monitors and GPUs that can sustain 240+ FPS. This is expensive.
The input lag question — does FPS matter on a 60 Hz monitor?
This is the part that confuses everyone. If your monitor is 60 Hz, you only see 60 unique frames per second — period. So why does running at 144 FPS feel more responsive than 60 FPS on the same monitor?
The answer is freshness. Each frame your GPU produces contains the input state at the moment that frame started rendering. If your GPU runs at 60 FPS, each frame is up to 16.6 ms old when the monitor grabs it. If your GPU runs at 144 FPS, each frame is at most 6.9 ms old. The monitor still only shows 60 of those frames per second, but the frames it shows are newer — which means your mouse movement is reflected on screen sooner. The average input lag improvement is the difference between half of each frame time, so going from 60 to 144 FPS on a 60 Hz monitor saves about 5 ms of input lag.
Going from 144 FPS to 240 FPS on a 60 Hz monitor saves another 2 ms — barely noticeable. Going from 240 FPS to 360 FPS saves less than 1 ms — invisible. So there are real diminishing returns, but the first jump from 60 to 144 FPS is genuinely valuable even on a 60 Hz monitor.
The 144 FPS on 144 Hz myth
You will sometimes see the claim that you need exactly 144 FPS to use a 144 Hz monitor. This is wrong. A 144 Hz monitor refreshes 144 times per second regardless of your FPS. What matters is whether your GPU can produce at least 144 FPS — if it cannot, you get judder (some frames are shown twice). If it can, you get smooth motion at the full refresh rate.
VRR (G-Sync/FreeSync) makes this less critical. With VRR, the monitor matches the GPU's frame rate, so you get smooth motion at any FPS from 30 to 144. Without VRR, you want to cap your FPS to a stable value your GPU can sustain — usually a few frames below the monitor's max refresh rate.
Real-world numbers: what you actually see
| GPU FPS | Monitor Hz | VRR | What you actually see and feel |
|---|---|---|---|
| 60 | 60 | Off | Smooth for most games. Noticeable input lag in fast games. |
| 144 | 60 | Off | Same visual smoothness as 60 FPS, but ~5ms less input lag. Tearing visible. |
| 144 | 60 | VSync on | Same as above, no tearing, but with extra VSync input lag. |
| 60 | 144 | Off | Smooth motion, but each frame held for 2.4 refreshes. Slight judder. |
| 144 | 144 | Off | Perfect smoothness, minimal input lag. Slight tearing on frame boundaries. |
| 144 | 144 | On | Perfect smoothness, minimal input lag, no tearing. The gold standard. |
| 200+ | 144 | On | Cap to 141 FPS to keep VRR active. Otherwise same as above. |
| 240+ | 240 | On | Marginal improvement over 144/144. Pros benefit; most do not. |